mirror of
https://github.com/SELinuxProject/setools
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103 lines
4.2 KiB
Python
103 lines
4.2 KiB
Python
# Copyright 2014-2015, Tresys Technology, LLC
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#
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# This file is part of SETools.
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#
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# SETools is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as
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# published by the Free Software Foundation, either version 2.1 of
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# the License, or (at your option) any later version.
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#
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# SETools is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with SETools. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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import logging
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from . import compquery
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from . import contextquery
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class InitialSIDQuery(compquery.ComponentQuery, contextquery.ContextQuery):
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"""Initial SID (context) query."""
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def __init__(self, policy,
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name=None, name_regex=False,
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user=None, user_regex=False,
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role=None, role_regex=False,
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type_=None, type_regex=False,
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range_=None, range_overlap=False, range_subset=False,
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range_superset=False, range_proper=False):
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"""
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Parameters:
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policy The policy to query.
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user The criteria to match the context's user.
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user_regex If true, regular expression matching
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will be used on the user.
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role The criteria to match the context's role.
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role_regex If true, regular expression matching
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will be used on the role.
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type_ The criteria to match the context's type.
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type_regex If true, regular expression matching
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will be used on the type.
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range_ The criteria to match the context's range.
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range_subset If true, the criteria will match if it is a subset
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of the context's range.
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range_overlap If true, the criteria will match if it overlaps
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any of the context's range.
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range_superset If true, the criteria will match if it is a superset
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of the context's range.
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range_proper If true, use proper superset/subset operations.
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No effect if not using set operations.
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"""
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self.log = logging.getLogger(self.__class__.__name__)
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self.policy = policy
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self.set_name(name, regex=name_regex)
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self.set_user(user, regex=user_regex)
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self.set_role(role, regex=role_regex)
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self.set_type(type_, regex=type_regex)
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self.set_range(range_, overlap=range_overlap, subset=range_subset,
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superset=range_superset, proper=range_proper)
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def results(self):
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"""Generator which yields all matching initial SIDs."""
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self.log.info("Generating results from {0.policy}".format(self))
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self.log.debug("Name: {0.name_cmp!r}, regex: {0.name_regex}".format(self))
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self.log.debug("User: {0.user_cmp!r}, regex: {0.user_regex}".format(self))
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self.log.debug("Role: {0.role_cmp!r}, regex: {0.role_regex}".format(self))
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self.log.debug("Type: {0.type_cmp!r}, regex: {0.type_regex}".format(self))
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self.log.debug("Range: {0.range_!r}, subset: {0.range_subset}, overlap: {0.range_overlap}, "
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"superset: {0.range_superset}, proper: {0.range_proper}".format(self))
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for i in self.policy.initialsids():
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if self.name and not self._match_regex(
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i,
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self.name_cmp,
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self.name_regex):
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continue
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if not self._match_context(
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i.context,
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self.user_cmp,
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self.user_regex,
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self.role_cmp,
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self.role_regex,
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self.type_cmp,
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self.type_regex,
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self.range_cmp,
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self.range_subset,
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self.range_overlap,
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self.range_superset,
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self.range_proper):
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continue
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yield i
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